Overview
The ADUCM331WDCPZ-RL is a highly integrated, 32-bit microcontroller from Analog Devices Inc., specifically designed for automotive battery monitoring applications. This device is part of the ADuCM330 and ADuCM331 series, which are complete system solutions for precisely and intelligently monitoring, processing, and diagnosing 12 V battery parameters. The ADUCM331WDCPZ-RL operates directly from a 12 V battery and integrates all necessary features to measure battery current, voltage, and temperature over a wide range of operating conditions.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Microcontroller | ARM Cortex-M3 32-bit processor | |
| Operating Voltage | External 3.6 V to 18 V (on VDD) | |
| Temperature Range | −40°C to +115°C | |
| ADC | Programmable gain (4 to 512), absolute input range: −200 mV to +300 mV | |
| Memory | 128 kB Flash/EE memory, 6 kB SRAM, 4 kB data Flash/EE memory | |
| Oscillators | 16.384 MHz high frequency oscillator, 32.768 kHz low power oscillator | |
| Communication | Serial wire debug (SWD) port, SPI serial input/output communication controller, LIN transceiver (LIN 2.2A-compatible) | |
| Power Consumption | < 18.5 mA (all peripherals active), < 100 μA (low power modes) | |
| Package | 32-VFQFN Exposed Pad, CSP |
Key Features
- Fully differential, buffered input for current measurement
- Programmable gain amplifier (PGA) for various current and voltage ranges
- On-chip ±5 ppm/°C voltage reference
- Buffered, on-chip attenuator for 12 V battery input
- External and on-chip temperature sensor options
- Low electromagnetic emissions and high electromagnetic immunity
- Integrated LIN transceiver for automotive communication
- Multiple low power operating modes
- On-chip peripherals including SPI, GPIO pins, timers, and watchdog timer
Applications
The ADUCM331WDCPZ-RL is primarily designed for automotive battery monitoring applications, including:
- 12 V battery health and charge state monitoring
- Automotive systems requiring precise measurement of battery current, voltage, and temperature
- Low power, high reliability automotive electronics
Q & A
- What is the operating voltage range of the ADUCM331WDCPZ-RL?
The device operates from an external 3.6 V to 18 V (on VDD).
- What is the temperature range for the ADUCM331WDCPZ-RL?
The device is specified over the −40°C to +115°C temperature range.
- What type of microcontroller does the ADUCM331WDCPZ-RL use?
The device uses an ARM Cortex-M3 32-bit processor.
- What are the memory specifications of the ADUCM331WDCPZ-RL?
The device has 128 kB Flash/EE memory, 6 kB SRAM, and 4 kB data Flash/EE memory.
- Does the ADUCM331WDCPZ-RL support low power modes?
Yes, the device can be configured in multiple low power operating modes, consuming less than 100 μA.
- What communication interfaces does the ADUCM331WDCPZ-RL support?
The device supports serial wire debug (SWD) port, SPI serial input/output communication controller, and LIN transceiver (LIN 2.2A-compatible).
- What is the package type of the ADUCM331WDCPZ-RL?
The device is packaged in a 32-VFQFN Exposed Pad, CSP.
- What are the key features of the analog subsystem in the ADUCM331WDCPZ-RL?
The analog subsystem includes a programmable gain amplifier (PGA), on-chip ±5 ppm/°C voltage reference, and buffered, on-chip attenuator for 12 V battery input.
- Is the ADUCM331WDCPZ-RL automotive qualified?
Yes, the device is automotive qualified and includes an integrated LIN transceiver.
- What are the typical applications of the ADUCM331WDCPZ-RL?
The device is primarily used for 12 V battery health and charge state monitoring in automotive systems.
